CVE Explorer

CVE-2026-44658

Zen is a firefox-based browser. Prior to 1.19.12b, RSS feed URLs entered by the user are validated to http: or https: in promptForFeedUrl, but item links inside the feed are not subject to the same restriction. The provider maps each RSS/Atom item link into item.url, filters only for presence and date, and returns the item list. The live-folder manager later creates pinned lazy tabs from these values with gBrowser.addTrustedTab(item.url, ...). This vulnerability is fixed in 1.19.12b.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0c43eb78eeccd47f8383fb38fe47cbfd1ad01201a0a168dc427f6ee09ccfc1fb

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"desktop","vendor":"zen-browser","versions":[{"status":"affected","version":"< 1.19.12b"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7ab680e5435af60a2eb3c8423dc799acde0257c64213ac441f33cfc45b9f2922 · sha256:03c4850ca897c408… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":2.4,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:7ab680e5435af60a2eb3c8423dc799acde0257c64213ac441f33cfc45b9f2922 · sha256:03c4850ca897c408… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7ab680e5435af60a2eb3c8423dc799acde0257c64213ac441f33cfc45b9f2922 · sha256:03c4850ca897c408… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/zen-browser/desktop/security/advisories/GHSA-cc9c-mmmf-c5j6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/zen-browser/desktop/security/advisories/GHSA-cc9c-mmmf-c5j6"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7ab680e5435af60a2eb3c8423dc799acde0257c64213ac441f33cfc45b9f2922 · sha256:03c4850ca897c408… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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